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35 | #define PAGE_SIZE FRAME_SIZE |
35 | #define PAGE_SIZE FRAME_SIZE |
36 | 36 | ||
37 | #define KA2PA(x) ((x) - 0x80000000) |
37 | #define KA2PA(x) ((x) - 0x80000000) |
38 | #define PA2KA(x) ((x) + 0x80000000) |
38 | #define PA2KA(x) ((x) + 0x80000000) |
39 | 39 | ||
- | 40 | /* |
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- | 41 | * Implementation of generic 4-level page table interface. |
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- | 42 | * IA-32 has 2-level page tables, so PTL1 and PTL2 are left out. |
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- | 43 | */ |
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- | 44 | #define PTL0_INDEX_ARCH(vaddr) (((vaddr)>>22)&0x3ff) |
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- | 45 | #define PTL1_INDEX_ARCH(vaddr) 0 |
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- | 46 | #define PTL2_INDEX_ARCH(vaddr) 0 |
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- | 47 | #define PTL3_INDEX_ARCH(vaddr) (((vaddr)>>12)&0x3ff) |
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- | 48 | ||
- | 49 | #define GET_PTL1_ADDRESS_ARCH(ptl0, i) ((pte_t *)((((pte_t *)(ptl0))[(i)].frame_address)<<12)) |
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- | 50 | #define GET_PTL2_ADDRESS_ARCH(ptl1, i) (ptl1) |
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- | 51 | #define GET_PTL3_ADDRESS_ARCH(ptl2, i) (ptl2) |
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- | 52 | #define GET_FRAME_ADDRESS_ARCH(ptl3, i) ((__address)((((pte_t *)(ptl3))[(i)].frame_address)<<12)) |
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- | 53 | ||
- | 54 | ||
40 | struct page_specifier { |
55 | struct page_specifier { |
41 | unsigned present : 1; |
56 | unsigned present : 1; |
42 | unsigned writeable : 1; |
57 | unsigned writeable : 1; |
43 | unsigned uaccessible : 1; |
58 | unsigned uaccessible : 1; |
44 | unsigned page_write_through : 1; |
59 | unsigned page_write_through : 1; |
Line 48... | Line 63... | ||
48 | unsigned : 2; |
63 | unsigned : 2; |
49 | unsigned avl : 3; |
64 | unsigned avl : 3; |
50 | unsigned frame_address : 20; |
65 | unsigned frame_address : 20; |
51 | } __attribute__ ((packed)); |
66 | } __attribute__ ((packed)); |
52 | 67 | ||
- | 68 | typedef struct page_specifier pte_t; |
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- | 69 | ||
53 | extern void page_arch_init(void); |
70 | extern void page_arch_init(void); |
54 | 71 | ||
55 | #endif |
72 | #endif |